以下关于机票有效期的说法，正确的是（ ）
A、客票有效期的计算，从旅行开始或填开客票之日的零时起至有效期满之日的零时为止BCD
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preferred,prefers,is,are,was,were,willbe,shallbeDuringtheholidayweek,one-thirdofthestudentsinourclass________preparedtostayoncampusforstudywhilearoundtenpercentofthem________somemoresleepathome.
Weather_______,we’llgooutforawalk.
Childrenhaveanatural________abouttheworldaroundthem.
than,as,more,most,theThe________informationthatcomesin,________moreconfusedthepicturebecomes.
——Wehavetostoptalkinghereoutside.Listen,_______!——Hurryup,orwe’llbelate
